89 lines
2.5 KiB
C++
89 lines
2.5 KiB
C++
/* -*-c++-*- OpenSceneGraph - Copyright (C) 1998-2005 Robert Osfield
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*
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* This library is open source and may be redistributed and/or modified under
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* the terms of the OpenSceneGraph Public License (OSGPL) version 0.0 or
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* (at your option) any later version. The full license is in LICENSE file
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* included with this distribution, and on the openscenegraph.org website.
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*
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* This library is distributed in the hope that it will be useful,
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* but WITHOUT ANY WARRANTY; without even the implied warranty of
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* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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* OpenSceneGraph Public License for more details.
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*/
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#ifndef OSG_TEXENV
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#define OSG_TEXENV 1
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#include <osg/GL>
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#include <osg/StateAttribute>
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#include <osg/Vec4>
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namespace osg {
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/** TexEnv encapsulates the OpenGL glTexEnv (texture environment) state.
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*/
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class OSG_EXPORT TexEnv : public StateAttribute
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{
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public :
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enum Mode {
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DECAL = GL_DECAL,
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MODULATE = GL_MODULATE,
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BLEND = GL_BLEND,
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REPLACE = GL_REPLACE,
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ADD = GL_ADD
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};
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TexEnv(Mode mode=MODULATE);
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/** Copy constructor using CopyOp to manage deep vs shallow copy. */
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TexEnv(const TexEnv& texenv,const CopyOp& copyop=CopyOp::SHALLOW_COPY):
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StateAttribute(texenv,copyop),
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_mode(texenv._mode),
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_color(texenv._color) {}
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META_StateAttribute(osg, TexEnv, TEXENV);
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virtual bool isTextureAttribute() const { return true; }
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/** Return -1 if *this < *rhs, 0 if *this==*rhs, 1 if *this>*rhs. */
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virtual int compare(const StateAttribute& sa) const
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{
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// Check for equal types, then create the rhs variable
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// used by the COMPARE_StateAttribute_Paramter macros below.
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COMPARE_StateAttribute_Types(TexEnv,sa)
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// Compare each parameter in turn against the rhs.
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COMPARE_StateAttribute_Parameter(_mode)
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COMPARE_StateAttribute_Parameter(_color)
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return 0; // Passed all the above comparison macros, so must be equal.
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}
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void setMode( Mode mode ) { _mode = mode; }
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Mode getMode() const { return _mode; }
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void setColor( const Vec4& color ) { _color = color; }
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Vec4& getColor() { return _color; }
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const Vec4& getColor() const { return _color; }
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virtual void apply(State& state) const;
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protected :
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virtual ~TexEnv( void );
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Mode _mode;
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osg::Vec4 _color;
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};
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}
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#endif
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